NJ7P SQL Tube Database Query

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A horizontal ribbon.

6DB5
Beam Power Amplifier

EIA Base & Outline

EIA Base: 9GR

Substitute Data

Preferred Substitutes ......................... 6CS5
Substitutes ................................... 6CM6 6GC5
Source ........................................ Sylvania

Application

Source ........................................ Sylvania
Miniature type used as a vertical-deflection amplifier or audio amplifier. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ Sylvania
Bulb .......................................... T-6 1/2
Base Type ..................................... Miniature Button 9-Pin
EIA Outline ................................... 6-3
Maximum Overall Height ........................ 2.750 In.
Maximum Seated Height ......................... 2.500 In.
Maximum Diameter .............................. 0.875 In.
EIA Base ...................................... 9GR
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ Sylvania
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.2 A

Direct Interelectrode Capacitances (approx)

Beam Pentode
Source ........................................ Sylvania
Input ......................................... 13 pf
Output ........................................ 8.0 pf
Grid to Plate ................................. 0.2 pf

Maximum Ratings (Design Center Values)

Beam Pentode
Source ........................................ Sylvania
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 150 V
Plate Dissipation ............................. 10 W
Grid No. 2 Dissipation ........................ 1.25 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ Sylvania
Plate Voltage ................................. 200 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 180 Ω
Plate Resistance (approx) ..................... 28K Ω
Transconductance .............................. 8000 µMho
Plate Current (Zero Signal) ................... 46 mA
Plate Current (Maximum Signal) ................ 47 mA
Grid No. 2 Current (Zero Signal) .............. 2.2 mA
Grid No. 2 Current (Maximum Signal) ........... 8.5 mA
Load Resistance ............................... 4K Ω
Power Output (approx) ......................... 3.8 W

Vertical Amplifier
Source ........................................ Sylvania
DC Plate Supply Voltage ....................... 110 V
Peak Negative-Pulse Plate Voltage ............. 110 V
DC Grid No. 3 Voltage ......................... 2000 V
DC Grid No. 2 Voltage ......................... -7.5 V
Peak Negative-Pulse Grid No. 1 Voltage ........ 49 V
Average Cathode Current ....................... 55 mA

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A horizontal ribbon.

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Tue, 24 May 2022 03:15:20 -0700